Major clean up and improvements to vimwiki compatibility and documentation.

Reviewed-on: #1

crates/nuwiki-core/src/syntax/vimwiki/lexer.rs

@@ -1,6 +1,6 @@
 //! Vimwiki lexer.
 //!
-//! Hand-rolled, two-pass per SPEC.md §6.6:
+//! Hand-rolled, two-pass:
 //!
 //!   - **Block pass:** scan the source line by line, recognise structural
 //!     constructs (headings, lists, tables, fences, comments, etc.), emit
@@ -12,7 +12,7 @@
 //! Both passes share one `Vec<VimwikiToken>` so the parser sees a single,
 //! ordered stream. The lexer is permissive: every delimiter is emitted; the
 //! parser pairs them and falls back to literal text on mismatches. Spans are
-//! stored as 0-indexed byte offsets per SPEC.md §6.5.
+//! stored as 0-indexed byte offsets.
 //!
 //! Multi-line constructs (`{{{ }}}`, `{{$ }}$`, `%%+ +%%`) flip a
 //! `BlockMode` so subsequent lines are treated as raw content until the
@@ -97,13 +97,13 @@ pub enum VimwikiTokenKind {
     CommentMultiClose,
     CommentMultiLine(String),
 
-    // ----- Tags (SPEC §12.3) -----
+    // ----- Tags -----
     /// `:tag1:tag2:` — colon-delimited tag line. The lexer treats this as
     /// block-level (must be the entire trimmed content of the line).
     /// Scope (file / heading / standalone) is the parser's job.
     Tag(Vec<String>),
 
-    // ----- Page placeholders (SPEC §9) -----
+    // ----- Page placeholders -----
     PlaceholderTitle(Option<String>),
     PlaceholderNohtml,
     PlaceholderTemplate(Option<String>),
@@ -129,7 +129,7 @@ pub enum VimwikiTokenKind {
     TransclusionSep,
     RawUrl(String),
 
-    /// Lex error — never aborts the whole document (SPEC §6.7).
+    /// Lex error — never aborts the whole document.
     Error(String),
 }
 
@@ -481,7 +481,7 @@ impl<'src> LexState<'src> {
         if trimmed.len() < 4 || !trimmed.bytes().all(|b| b == b'-') {
             return false;
         }
-        // SPEC §9: four or more dashes. Allow surrounding whitespace.
+        // Four or more dashes. Allow surrounding whitespace.
         let span = Span::new(self.line_start_pos(), self.line_end_pos(line));
         self.push(VimwikiTokenKind::HorizontalRule, span);
         self.emit_newline(line);

crates/nuwiki-core/src/syntax/vimwiki/mod.rs

@@ -10,7 +10,7 @@ use crate::ast::DocumentNode;
 use crate::syntax::{Lexer, Parser, SyntaxPlugin};
 
 /// SyntaxPlugin facade: chains `VimwikiLexer` + `VimwikiParser` so the
-/// registry can hand out a single trait object per SPEC.md §6.3.
+/// registry can hand out a single trait object.
 #[derive(Debug, Default, Clone)]
 pub struct VimwikiSyntax;
 

crates/nuwiki-core/src/syntax/vimwiki/parser.rs

@@ -1,6 +1,6 @@
 //! Vimwiki parser.
 //!
-//! Hand-rolled recursive-descent over `Vec<VimwikiToken>` (SPEC.md §6.7).
+//! Hand-rolled recursive-descent over `Vec<VimwikiToken>`.
 //! Resilient: never aborts the document. Anything the dispatcher can't
 //! claim becomes a `BlockNode::Error(ErrorNode)` so progress is
 //! guaranteed.
@@ -28,7 +28,7 @@
 //!
 //! `[[ ]]` payloads are inspected to choose between `WikiLinkNode`
 //! (the default) and `ExternalLinkNode` (when the target is a URL). The
-//! `LinkTarget` enum follows SPEC §9: leading `/` is root-relative,
+//! `LinkTarget` enum follows the vimwiki conventions: leading `/` is root-relative,
 //! `//` is filesystem-absolute, `wiki<N>:` / `wn.<Name>:` are interwiki,
 //! `diary:` / `file:` / `local:` are their own kinds, and a trailing `/`
 //! marks a directory link.
@@ -69,10 +69,10 @@ impl Parser for VimwikiParser {
 struct ParseState<'a> {
     toks: &'a [VimwikiToken],
     pos: usize,
-    /// Phase 12: count of `HeadingNode`s already pushed to `children`.
+    /// Count of `HeadingNode`s already pushed to `children`.
     /// `headings_seen - 1` is the most recent heading's index.
     headings_seen: usize,
-    /// Phase 12: source line of the most recently-emitted heading.
+    /// Source line of the most recently-emitted heading.
     /// `tag_line - last_heading_line ∈ {1, 2}` is a header-scope tag.
     last_heading_line: Option<u32>,
 }
@@ -141,7 +141,7 @@ impl<'a> ParseState<'a> {
             }
             let before = self.pos;
             let block = self.parse_block();
-            // Phase 12: file-scope tags get accumulated into metadata so
+            // File-scope tags get accumulated into metadata so
             // callers can read page-level tag membership without walking
             // the AST. The TagNode itself stays in `children` so renderers
             // see it too.
@@ -280,7 +280,7 @@ impl<'a> ParseState<'a> {
                     let inline = parse_inline_seq(&self.toks[inline_start..self.pos]);
                     self.advance();
                     self.eat_newline();
-                    // Record for tag-scope resolution (Phase 12).
+                    // Record for tag-scope resolution.
                     self.headings_seen += 1;
                     self.last_heading_line = Some(span_end.line);
                     return BlockNode::Heading(HeadingNode {